Haha seeing all these posts, I feel like posting my only experience.

Ok here goes. I'm from Penang anyway. A few years back when I was in Form 3. Cant really remember Form 3 or Form 4. Behind my school was an old building. Not gonna reveal my school's name, but not many schools here has a heritage building behind. Guess you guys should know. Ok there was one where we had a night time event. At that time, it was predicted in the newspapers that we will have meteor showers flying pass earth so our school decided to prepare the telescope for us to see. Me and my 3 buddies decided to join.

When we arrived at school, everyone took turns to see the meteor showers. I remember after the shower, me and my best buddy decided to go to the toilet before heading home. Ya, the old torn down heritage building is right behind my school's toilet. So after settling my little business, I came out of the toilet first and wait for my buddy. Suddenly, I saw a dim light in the building. I'm not sure what is it, but definitely a light that flew pass rooms after rooms until it disappear. The building is very old, and if you tell me someone is running, it's almost impossible because I would have heard the running steps. Freaked me out like shit.